初探MVC

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很好的东东哦。。。。。不错

原文地址：初探MVC作者：泛音

[转载]初探MVC

M部分是javabean中的User.java

V部分是failure.jsp;

index.jsp;

success.jsp

C部分是HelloServelt.java

LoginProcess.java

V部分的login.jsp;

[转载]初探MVC

<body>
   <form name="form1" method="post"action="LoginProcess"> 用户ID:
   <input type="text"name="username"><br>口令 :
      <input type="text"name="userpass"><br>
      <input type ="submit"value="登录">
      <input type ="reset"value="重置">
   </form>
</body>

V部分的failure.jsp
<body>
failure.jsp
</body>

V部分的 failure.jsp
<body>
failure.jsp
</body>

package javabean;

public class User {
      private String username;
      private String userpass;
      public String getUsername()
      {
       returnusername;
      }
      public void setUsename(String username)
      {
      this.username=username;
      }
      public String getUserpass()
      {
       returnuserpass;
      }
      public void setUserpass(String userpass)
      {
      this.userpass=userpass;
      }
      public boolean check()
      {
       if(username == null || userpass == null)
       {
        return false;
       }
       if(username.equals("cdq")&&userpass.equals("123"))
       {
        return true;
       }
       else
       {
        return false;
       }
    }
}

[转载]初探MVC

servlet有两个

HelloServlet.java 和 LoginProcess.java

package servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class HelloServlet extends HttpServlet {
    publicHelloServlet() {
  super();
}
    public voiddestroy() {
  super.destroy(); // Just puts"destroy" string in log
  // Put your code here
}
    public voiddoGet(HttpServletRequest request, HttpServletResponseresponse)
   throwsServletException, IOException {

  response.setContentType("text/html");
  PrintWriter out =response.getWriter();
  out.println("Test1 Servlet");

}
    public voiddoPost(HttpServletRequest request, HttpServletResponseresponse)
   throwsServletException, IOException {

    doGet(request,response);
}
    public voidinit() throws ServletException {
}
}

[转载]初探MVC

2

package servlet;
import java.io.IOException;
import javabean.User;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoginProcess extends HttpServlet {
       public LoginProcess() {super();}
       public void destroy() { super.destroy(); }
       public void doGet(HttpServletRequest request, HttpServletResponseresponse)
   throwsServletException, IOException {
       response.setContentType("text/html");
       //第一步获取用户的输入的信息
  String username =request.getParameter("username");
  String userpass =request.getParameter("userpass");
  //第二步调用JavaBean
  User user = new User();
  user.setUsename(username);
  user.setUserpass(userpass);
  boolean b = user.check();
  //第三步选择一个界面对用户进行响应
  String forward;
  if(b){
   forward ="success.jsp";}
  else{
   forward ="failure.jsp";}
  //将请求转发到forward这个页面
       RequestDispatcher rd = request.getRequestDispatcher(forward);
       rd.forward(request, response);}
       public void doPost(HttpServletRequest request, HttpServletResponseresponse)
   throwsServletException, IOException {
                doGet(request,response); }
       public void init() throws ServletException {}
}

[转载]初探MVC